DE69425322D1 - DECIMATION FILTER - Google Patents

DECIMATION FILTER

Info

Publication number
DE69425322D1
DE69425322D1 DE69425322T DE69425322T DE69425322D1 DE 69425322 D1 DE69425322 D1 DE 69425322D1 DE 69425322 T DE69425322 T DE 69425322T DE 69425322 T DE69425322 T DE 69425322T DE 69425322 D1 DE69425322 D1 DE 69425322D1
Authority
DE
Germany
Prior art keywords
pct
decimation filter
order
decimation
sec
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69425322T
Other languages
German (de)
Inventor
Tapio Saramaeki
Ville Eerola
Timo Husu
Eero Pajarre
Seppo Ingalsuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tritech Microelectronics Ltd
Original Assignee
Tritech Microelectronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tritech Microelectronics Ltd filed Critical Tritech Microelectronics Ltd
Application granted granted Critical
Publication of DE69425322D1 publication Critical patent/DE69425322D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0664—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0671—Cascaded integrator-comb [CIC] filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0685—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being rational

Abstract

PCT No. PCT/FI94/00125 Sec. 371 Date Sep. 27, 1995 Sec. 102(e) Date Sep. 27, 1995 PCT Filed Mar. 31, 1994 PCT Pub. No. WO94/23492 PCT Pub. Date Oct. 13, 1994The invention relates to a decimation filter comprising a direct cascade arrangement of digital first order and second order integration and derivation stages (22, 23, 25, 27) and a decimation stage. The decimation filter structure of the invention comprises additional branches (28, 29, 30, 31) for shifting the location of the attenuation zeros of the decimation filter and thereby reducing the order M and the number of structural elements M of the required filter.
DE69425322T 1993-04-05 1994-03-31 DECIMATION FILTER Expired - Lifetime DE69425322D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI931531A FI96255C (en) 1993-04-05 1993-04-05 decimation Filter
PCT/FI1994/000125 WO1994023492A1 (en) 1993-04-05 1994-03-31 Decimation filter

Publications (1)

Publication Number Publication Date
DE69425322D1 true DE69425322D1 (en) 2000-08-24

Family

ID=8537686

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69425322T Expired - Lifetime DE69425322D1 (en) 1993-04-05 1994-03-31 DECIMATION FILTER

Country Status (8)

Country Link
US (1) US5689449A (en)
EP (1) EP0693235B1 (en)
JP (1) JPH08508374A (en)
KR (1) KR100302156B1 (en)
AT (1) ATE194895T1 (en)
DE (1) DE69425322D1 (en)
FI (1) FI96255C (en)
WO (1) WO1994023492A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3210219B2 (en) * 1995-09-08 2001-09-17 松下電器産業株式会社 Comb filter and transmitting / receiving device using the same
US5808924A (en) * 1996-07-08 1998-09-15 Boeing North American, Inc. Decimating IIR filter
FI101915B (en) 1996-12-04 1998-09-15 Nokia Telecommunications Oy Decimation procedure and decimation filter
EP0970563B1 (en) * 1998-01-26 2006-06-14 Koninklijke Philips Electronics N.V. Time discrete filter
AUPP271998A0 (en) * 1998-03-31 1998-04-23 Lake Dsp Pty Limited Lookahead sigma-delta modulator
US6087969A (en) * 1998-04-27 2000-07-11 Motorola, Inc. Sigma-delta modulator and method for digitizing a signal
US6161118A (en) * 1998-06-12 2000-12-12 Oak Technology, Inc. Digital comb filter having a cascaded integrator stage with adjustable gain
US6233594B1 (en) * 1998-09-23 2001-05-15 Globespan, Inc. Decimation filter for oversampling analog-to digital converter
DE19919575C1 (en) 1999-04-29 2001-01-11 Siemens Ag Comb filter arrangement for decimation of a sequence of digital input values into a sequence of digital output values by a non-integer factor
GB9911750D0 (en) * 1999-05-21 1999-07-21 Hewlett Packard Co Method and apparatus for measuring parameters of an electrical system
US6470365B1 (en) * 1999-08-23 2002-10-22 Motorola, Inc. Method and architecture for complex datapath decimation and channel filtering
FI109383B (en) 2000-11-03 2002-07-15 Nokia Corp Filtration procedure and filters
ES2186536B1 (en) * 2001-05-07 2004-02-01 Univ Sevilla SIGMA-DELTA MODULATOR IN MULTI FREQUENCY CASCADE.
US6507300B1 (en) * 2001-06-27 2003-01-14 Intel Corporation Variable rate decimator
US20030130751A1 (en) * 2002-01-09 2003-07-10 Freesystems Pte.,Ltd. New filter bank for graphics equalizer implementation
US7685217B2 (en) * 2005-07-26 2010-03-23 Broadcom Corporation Channel-select decimation filter with programmable bandwidth
CN103475335A (en) * 2013-09-04 2013-12-25 苏州苏尔达信息科技有限公司 Polyphase digital drop sampling filter
RU2684190C1 (en) * 2018-05-18 2019-04-04 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") Multi-speed digital extrapolator

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL180895C (en) * 1978-11-30 1987-05-04 Philips Nv ANALOGUE DIGITAL CONVERTER.
US4509037A (en) * 1981-06-12 1985-04-02 Gould Inc. Enhanced delta modulation encoder
US4680810A (en) * 1985-06-28 1987-07-14 American Telephone And Telegraph Company, At&T Bell Labs Means for controlling a semiconductor device and communication system comprising the means
DE3781159D1 (en) * 1987-12-12 1992-09-17 Itt Ind Gmbh Deutsche DIGITAL DECIMATION FILTER.
US4972356A (en) * 1989-05-01 1990-11-20 Motorola, Inc. Systolic IIR decimation filter
US5012244A (en) * 1989-10-27 1991-04-30 Crystal Semiconductor Corporation Delta-sigma modulator with oscillation detect and reset circuit
US4999798A (en) * 1990-03-01 1991-03-12 Motorola, Inc. Transient free interpolating decimator
US5148167A (en) * 1990-04-06 1992-09-15 General Electric Company Sigma-delta oversampled analog-to-digital converter network with chopper stabilization
US5070310A (en) * 1990-08-31 1991-12-03 Motorola, Inc. Multiple latched accumulator fractional N synthesis
NL9100379A (en) * 1991-03-01 1992-10-01 Philips Nv SIGMA DELTA MODULATOR.
US5208594A (en) * 1991-05-02 1993-05-04 Ricoh Company, Ltd. Signal processor that uses a delta-sigma modulation
US5166642A (en) * 1992-02-18 1992-11-24 Motorola, Inc. Multiple accumulator fractional N synthesis with series recombination
JPH05259813A (en) * 1992-03-03 1993-10-08 Nec Corp Digital filter

Also Published As

Publication number Publication date
EP0693235A1 (en) 1996-01-24
FI931531A (en) 1994-10-06
KR960702211A (en) 1996-03-28
FI931531A0 (en) 1993-04-05
ATE194895T1 (en) 2000-08-15
WO1994023492A1 (en) 1994-10-13
EP0693235B1 (en) 2000-07-19
FI96255C (en) 1996-05-27
FI96255B (en) 1996-02-15
JPH08508374A (en) 1996-09-03
KR100302156B1 (en) 2001-10-22
US5689449A (en) 1997-11-18

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Legal Events

Date Code Title Description
8332 No legal effect for de